2 * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include <openssl/conf.h>
12 #include <openssl/trace.h>
14 /* ENGINE config module */
16 static const char *skip_dot(const char *name)
18 const char *p = strchr(name, '.');
25 static STACK_OF(ENGINE) *initialized_engines = NULL;
27 static int int_engine_init(ENGINE *e)
31 if (!initialized_engines)
32 initialized_engines = sk_ENGINE_new_null();
33 if (!initialized_engines || !sk_ENGINE_push(initialized_engines, e)) {
40 static int int_engine_configure(const char *name, const char *value, const CONF *cnf)
45 STACK_OF(CONF_VALUE) *ecmds;
46 CONF_VALUE *ecmd = NULL;
47 const char *ctrlname, *ctrlvalue;
51 name = skip_dot(name);
52 OSSL_TRACE1(ENGINE_CONF, "Configuring engine %s\n", name);
53 /* Value is a section containing ENGINE commands */
54 ecmds = NCONF_get_section(cnf, value);
57 ENGINEerr(ENGINE_F_INT_ENGINE_CONFIGURE,
58 ENGINE_R_ENGINE_SECTION_ERROR);
62 for (i = 0; i < sk_CONF_VALUE_num(ecmds); i++) {
63 ecmd = sk_CONF_VALUE_value(ecmds, i);
64 ctrlname = skip_dot(ecmd->name);
65 ctrlvalue = ecmd->value;
66 OSSL_TRACE2(ENGINE_CONF, "ENGINE conf: doing ctrl(%s,%s)\n",
69 /* First handle some special pseudo ctrls */
71 /* Override engine name to use */
72 if (strcmp(ctrlname, "engine_id") == 0)
74 else if (strcmp(ctrlname, "soft_load") == 0)
76 /* Load a dynamic ENGINE */
77 else if (strcmp(ctrlname, "dynamic_path") == 0) {
78 e = ENGINE_by_id("dynamic");
81 if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", ctrlvalue, 0))
83 if (!ENGINE_ctrl_cmd_string(e, "LIST_ADD", "2", 0))
85 if (!ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0))
88 /* ... add other pseudos here ... */
91 * At this point we need an ENGINE structural reference if we
92 * don't already have one.
95 e = ENGINE_by_id(name);
104 * Allow "EMPTY" to mean no value: this allows a valid "value" to
105 * be passed to ctrls of type NO_INPUT
107 if (strcmp(ctrlvalue, "EMPTY") == 0)
109 if (strcmp(ctrlname, "init") == 0) {
110 if (!NCONF_get_number_e(cnf, value, "init", &do_init))
113 if (!int_engine_init(e))
115 } else if (do_init != 0) {
116 ENGINEerr(ENGINE_F_INT_ENGINE_CONFIGURE,
117 ENGINE_R_INVALID_INIT_VALUE);
120 } else if (strcmp(ctrlname, "default_algorithms") == 0) {
121 if (!ENGINE_set_default_string(e, ctrlvalue))
123 } else if (!ENGINE_ctrl_cmd_string(e, ctrlname, ctrlvalue, 0))
128 if (e && (do_init == -1) && !int_engine_init(e)) {
135 ENGINEerr(ENGINE_F_INT_ENGINE_CONFIGURE,
136 ENGINE_R_ENGINE_CONFIGURATION_ERROR);
138 ERR_add_error_data(6, "section=", ecmd->section,
139 ", name=", ecmd->name,
140 ", value=", ecmd->value);
146 static int int_engine_module_init(CONF_IMODULE *md, const CONF *cnf)
148 STACK_OF(CONF_VALUE) *elist;
151 OSSL_TRACE2(ENGINE_CONF, "Called engine module: name %s, value %s\n",
152 CONF_imodule_get_name(md), CONF_imodule_get_value(md));
153 /* Value is a section containing ENGINEs to configure */
154 elist = NCONF_get_section(cnf, CONF_imodule_get_value(md));
157 ENGINEerr(ENGINE_F_INT_ENGINE_MODULE_INIT,
158 ENGINE_R_ENGINES_SECTION_ERROR);
162 for (i = 0; i < sk_CONF_VALUE_num(elist); i++) {
163 cval = sk_CONF_VALUE_value(elist, i);
164 if (!int_engine_configure(cval->name, cval->value, cnf))
171 static void int_engine_module_finish(CONF_IMODULE *md)
175 while ((e = sk_ENGINE_pop(initialized_engines)))
177 sk_ENGINE_free(initialized_engines);
178 initialized_engines = NULL;
181 void ENGINE_add_conf_module(void)
183 CONF_module_add("engines",
184 int_engine_module_init, int_engine_module_finish);